<multi-select-tree ng-model="model[options.key]" data-input-model="to.options" data-output-model="model[options.key]" theme="bootstrap" ng-required="{{to.required}}" ng-disabled="{{to.disabled}}" multi-select="to.isMultiSelect" data-default-label="{{to.placeholder || 'please select'}}"
    data-refresh="to['refresh'](items)" data-refresh-delay="{{to.refreshDelay}}" data-callback="to['onDataCallback'](item, selectItems, options, this ,model)" data-select-only-leafs="to.selLeafs" data-trans-label="{{ to['labelProp'] || 'name' }}" data-switch-view="false"></multi-select-tree>